Oarlock



March 16 ,1926. 1,577,417

' O.BERG

OARLOCK Filed Sept. 27, 1924 Patented Mar. 164, 1926.

unirse stares OLAF'ERG, OF ST. PAUL, MINNESOTA.

OARLOCK.

Application l'ed September 271924'. Serial No.v 740,251..

To aU wimmmay/ concern.'

Be it known that l, OLAF Birne, a citizenof Sweden, residing' at St, Patil., in the. county of Ramsey and State of hlinnesota, have invented certain new and useful lmproven'ients in Oarlocks; and l do hereby declare the following to' be a full., clear, and exact 'description of the invention, snch'as will enable others skilled in the art to which itappertainstof make and use` the same.

This invention has for an object to provide an extren'iely simple but highly efficient oarlock comprising few parts.

A further object of the invention is to provide an oarlock, one part of which will be permanently secured to the boat and the other parte of' which will be carried by the oar, whereby the oar may be readily attached or detached, leaving' no means on the boat whereby an ordinary Aoar may be substituted to propel the boat.

An additional object is toprovide a re versible member on which the oar is Vino-nnted, which will permit the oar to be carried on the guinwale of the boat at two different levels.

It is ay further object in snch an oarlock to provide means whereby the oar cannot be thrown from the lock or out of the boat while rowing.

These andA other objects` of the invention will be appar it from the following descripf tion made in connection with the` acconrv panying' drawings, wherein klike characters refer to similar parts throughout the Several views, and in which,

Fig. l is a perspective view showing` an oar and oarlock in working position on a portion of a rowboat; j

Fig. 2 is a plan-view showing a fragment of an oar with part of the oarlock carried thereby; and

Fig. 8 is a view partly in side elevation and partly in section of an oar in working polsition on a fragment of a boat equipped with the novel oarlock.

Referring to the drawings The numeral l indicates a rowboat having a gunwale to which a pintle bracket 5, carryin o; an upstanding' pintle 6, is secured. A cylindrical hub member 7 is adapted to be slipped over pintle (i for horizontal pivotal motion thereon. cast integral with the hub 7, projects therefrom at substantiallyO degrees to the axis A pin or bolt 8, preferably thereof, and is provided with a collar or flange 8f* adj aeent the hub 7. The outer end of pin 8 is threaded to engage a nut 9. The invention requires the use of a specially prepared oar' l() havin-g' a transvesre aperture therethrough in which a bushingvll is disposed 'adapted to` form a bearing'f for. pin 8, which passes therethrough and is secured thereto by the nut 9. Obviously,` the oar l0 is capable of vertical pivotal motion on the pin Sand horizontalpivotal motion on the pintle 6. The aperture in oar l() is preferably made at right angles to the plane of the blade of the oar, whereby the blade will always be held in proper workingY positionvto the water. A transverse aperture is provided in the top of the pintle 6 through which a cotter pin l2, flexibly secured to the hub 7 by the chain 13, may be passed to detachably lock the hub on pintle 6 with freedom for pivotal motion. y

heY pin 8 projects from the hub Z at a point thereon considerably nearer one end thereof than the other end, enablingV the oar to be set to two different levels` bysimply turning, the hub upside down, and, as the opposite oarlocks will be rights and lefts, this chang-e in 'levels can be made while keeping the oars in the same relative positions relative to the seat on which the oarsinan sits, Vby shifting the oarlocks to opposite sides of the boat when the hubs are reversed. This adjustment of the level of the oar is of considerable` importance, since, when rowing; in rough weather, the oars Shoa-ld vbe rigged considerably higher or at a higher .level than when the water upon which the boat isl rowed is perfectly calm. The high riggingis necessary to enable the `oarsman to fret his oar in and out of the water without trouble, due to the waves at the side of the boat. v A

It is also obvious that the oarlocks may be readily adjusted for either pulling or pushing;- of the oars, or, in other words, the oar may be positioned nearer to or farther away from the oarsman by merely turning the hubs upside down Vwithout shifting from right to left pintles. In the usage of the oar, it is, of course, obvious that swinging motion in a horizontal plane is facilitated by the hub 7, while pivotal motion in a vertical plane is facilitated by the bearing` through which the pin 8 passes. It will also be noted that the oar, itself, cannot be turned in the lock but that the blade is always set at proper pitch for engaging the .surface of the water.

The part of the lock carried by the boat, namely7 the pintle bracket7 Will not accommodate an ordinary oar or oarloclr, so that when the oars are removed and the boat left, there Will be little chance of a trespasser rowing the boat away. rThe part of the oarlock carried by the oar is secured thereto and connot fall off or be lost.

There can be no chance of the oar coming ofi' the lock or the hub 7 .slipping off the pintle 5 While rowing, since the pin l2 secures these last named parts together.

rThe parts are few and simple and may be manufactured at small cost and are easily installed.

The invention has been put to extensive actual usage and has been found highly etlicient for the purposes above enumerated.

It Will be understood that various changes may be made in the form7 details and ar` rangement of parts without departing Jfrom the scope of the invention.

What I claim is l. In an oarlcclz, the combination with an oar having a bearing extending transversely of its axis at its fulcrum point, of a substantially vertical pintle secured to the gunwale of a boat, a hub member journaled for horizontal pivotal motion on said pintle, and a substantially horizont-al pin rigidly secured to said hub member adapted to pass through the bearing in said oar and be secured thereto to permit vertical pivotal motion of said oar thereon. l

2. In an oarlock, the combination With an oar having a transverse aperture through the body thereof at its fulcrum point, of an upstanding pintle secured to the gunwale of a boat, a readily detachable hub member adapted to be journaled on said pintle for horizontal pivotal motion thereon, a substantially horizontal pin integral with said hub and projecting therefrom passing through said aperture in said oar to permit vertical pivotal motion of said oar thereon,

an oar engaging flange on the inner end of said pin, and means engaging t-he outer end of .said pin to secure said oar thereon.

3. An oarloclz, comprising an upstanding pintle adapted to be secured to the gunwale of a boatj a hub member journaled for horizontal pivotal motion thereon, and means carried by said hub member nearer one end thereof than the other for securing an oar thereto With freedom for vertical pivotal motion, said hub member being reversible on said pintle whereby said oar may be set to tivo different levels.

4. The structure .set forth in claim 3, and a bushing disposed in the aperture in said oar forming a bearing for said pin.

5. An oarlock having in combination a pivot member adapted to be secured to the gunWale of a boa-t, a co-operating pivot member mounted for horizontal pivotal motion on said rst mentioned pivot member and means carried by said second mentioned P pivot member nearer one end thereof than the other for securing an oar thereto with freedom for pivotal vertical motion, said second mentioned pivotal member being reversible on said first mentioned member whereby said oar may be set to two different levels.

6. In an oarlock, the combination With an oar having a transverse aperture through the body thereof at its fulcrum point, of an upstanding pintle secured to the gunxvale of a boat, a detachable hub member adapted to be journaled on said pintle for horizontal pivotal motion, a substantially horizontal pin carried by said hub member and projecting therefrom passing through said aperture in .said oar and having a flange adjacent its inner end and adapted to engage one side of said oar and a bushing also passing through said aperture in said oar and surrounding said pin having a flanged head adapted to engage the outer side of said oar.

In testimony whereof I affixV my signature.

OLAF BERG. 

